Zomato — no food but charges money

I have order food chicken burger amd combo from zomato but they given a bun with a missing chicken which is also spilled and to cold to eat, don’t know which type of packaging they use, it’s worst of all and the main thing they don’t have a members to hamdel customer, struggling for my money back, they are saying they have taken the feedback, will i paid for feedback is this # business they are running. Totally fraud they are doing.